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20 Cards in this Set

  • Front
  • Back
Projectile
an object that is thrown
Terminal Velocity
the greatest velocity a falling object can achieve
Friction
a force that one surface exerts on another surface when they rub against each other
Inertia
the tendency of an object to resist change in its motion
Newton
a unit of measure that equals the force required to move 1 kilogram of mass 1 meter per second
Fluid Friction
friction that occurs as an object moves through a fluid
Gravity
the attractive forces between objects
law of conservation of momentum
the rule that in the absence of outside forces, the total momentum of objects that interact does not change
weight
the force of gravity on an object at the surface of a planet
air resistance
a type of fluid friction exerted on objects as they fall through the air
balanced forces
equal forces acting on an object in opposite directions
rolling friction
friction that occurs when an object rolls over a surface
mass
the amount of matter in an object
momentum
the product of an objcets velocity and mass
static friction
the friction that acts on objects that are not moving
force
a push or a pull
net force
the overall force on an object when all the individual forces acting on it are added together
unbalanced forces
forces that produce a nonzero net force, which changes an objects motion
free fall
the motion of a falling object when the only force acting on it is gravity
sliding friction
friction that occurs when one object slides over another